Mathematics
Senior High
積分 (3)の解説6から7行目になる計算が合わないので教えて欲しいです。
20 (
378 次の不定積分を求めよ。
x
*(2) (2x+1)/x+2 dx *(3)
dx
V1-2x
dx
C88
0
(4) Vx-1=tとおくと
x-1=?, x=t?+1, dx=2tdt
x?
t+1)?
.2tdt
dx=
Vx-1
=2|(*+2t°+1)dt
f5
=2(
5
+(3+?
2
=(3+10°+15)+C
15
2
-(3x2+4x+8)Vx-1+C
15
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